Do Homework-Brocke Allen-Google Chrome www.mathodl MATH 2300-010 Fall 2017 Brook

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Do Homework-Brocke Allen-Google Chrome www.mathodl MATH 2300-010 Fall 2017 Brooke Alen 12917 1248PM Homework: Chapter 11 Homework Score: 0 of 1 pt 11.1.51 47 of 19 (12 complete) HW Score: 25.68%, 4 88 of 19 pts Dung a period od 11 years or 1000 peoplethat were selected to grandy of grand jury members who were immgrants y ty 28% ot them were m ng ants Construct a w% cred cenovait the perro e The 99% confidence merval is fromto (Round to tree decrnal places as needed ) Enter your answer in the edit fields and then click Check Answer Clear A All parts showing

Explanation / Answer

At 99% Confidence interval the critical value is z0.005 = +/- 2.58

The Confidence interval is

P +/- z0.005 * sqrt (P * (1 - P )/n )

= 0.28 +/- 2.58 * sqrt (0.28 * 0.72/1000)

= 0.28 +/- 0.037

= 0.243, 0.317

B) P = 700/1200 = 0.583

At 95% confidence interval the critical value is z0.025 = 1.96

The confidence interval is

P +/- margin of error

= 0.583 +/- 0.027

= 0.556, 0.61

=

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